Commission Shaving: How to Detect It and What to Do About It

You built your funnel, negotiated your deal, and traders are depositing and trading. The commission statement lands every month, the number looks roughly right, and you move on. That "roughly right" is exactly where commission shaving lives. It is not a single dramatic theft you would notice immediately. It is a small, repeated gap between the deal you signed and the payout you actually receive, engineered to stay just below the threshold where you would bother to check.

This article shows you what commission shaving actually looks like inside a statement, why it is hard to catch by eye, and the exact reconciliation habit that makes it visible. You do not need to become a forensic accountant. You need one spreadsheet, one recurring export, and the discipline to run the comparison every month.

What Commission Shaving Actually Is

Commission shaving is the practice of paying an IB slightly less than the agreed rate, spread across enough trades or enough time that the shortfall is easy to miss. It differs from outright non-payment or a fraud clause that voids commissions outright. Shaving is quieter: a rounding rule that always rounds down, a spread mark-up that creeps from 0.3 pips to 0.25 pips without notice, or a batch of trades reclassified as "scalping" and excluded from the lot rebate pool.

The mechanism matters because it determines where you look for it. Shaving generally happens in one of four places:

1. Volume classification. Trades held under a minimum duration, or opened and closed inside a spread threshold, get excluded from qualified volume — sometimes by a legitimate anti-abuse rule, sometimes by a rule quietly tightened after your deal was signed.
2. Markup drift. On a raw-spread account where your commission comes from a markup on top of the raw spread, the markup itself can shrink without the broker changing your stated per-lot rate.
3. Hierarchy leakage. If you run sub-IBs, an override that should route to you gets absorbed upstream, or a markup cap silently caps what flows down through your tier structure.
4. Rounding and truncation. Per-lot commissions rounded down to the nearest cent, applied consistently across tens of thousands of trades, produce a real number over a year.

Why It's Easy to Miss

The reason commission shaving survives is scale. One report on broker commission-tracking systems found that a $2-per-lot overpayment error across 20,000 monthly lots reaches $480,000 a year before anyone notices — and the same math runs in reverse when the error underpays you. A gap of $0.10 per lot feels irrelevant on any single statement. At 5,000 lots a month it is $6,000 a year. At 20,000 lots it is $24,000. You will never see that by eyeballing a monthly PDF.

The second reason is that most IBs have no independent source of truth. Your only view of your own volume is the same dashboard the broker controls. If the dashboard understates your qualified lots, you have no way to know unless you are tracking client activity yourself through your own tracking links and analytics.

The Criteria That Tell You Whether to Look Closer

Use this table to decide how much reconciliation effort a given partnership deserves. Higher-risk setups justify a stricter, more frequent check.

How to Build Your Own Reconciliation

You need three things running in parallel, none of which require special tools beyond a spreadsheet.

1. Your own tracked volume. Log referred client activity independently — sign-ups, funded accounts, and where possible trade counts — through your own tracking link and any analytics you control. This is your baseline, not the broker's.
2. The broker's raw trade export, not just the summary statement. Most CRMs will produce a client-level or trade-level export on request even if it is not in the default dashboard. Ask for it monthly.
3. Your written deal terms, including the exact rate, any tiering, minimum trade duration rules, and markup cap, saved somewhere outside the broker's portal (email thread, PDF, contract).

Each month, pull the trade-level export, apply your contracted rate by hand to a sample of at least 50-100 trades across different clients and instruments, and compare your recalculated total to what was actually paid. A gap under 1-2% is normal rounding noise. A gap that is consistent, always in the broker's favor, and grows with volume is the pattern worth escalating.

A Worked Example

Suppose your deal is $6 per standard lot on a specific account type, paid monthly, with no minimum duration clause in writing. Your own tracking shows 4,800 qualified lots from referred clients in a given month. Contracted commission on that volume is $28,800. The broker's statement shows $27,150 — a $1,650 shortfall, about 5.7%.

You request the trade-level export and find the broker has excluded roughly 275 lots as "under 60 seconds holding time," a rule that appears nowhere in your written deal sheet. That is the discrepancy. It may turn out to be a legitimate, previously-undisclosed anti-abuse policy the broker applies to everyone — or it may be a rule invented after the fact to shave your payout. Either way, you now have a specific number and a specific rule to raise, instead of a vague feeling that "the payout seems low this month."

This worked example only functions if you already have your own qualified-lot count to compare against. Without step 1 above, you would have nothing to hold the $27,150 next to, and the shortfall would be invisible.

Common Mistakes IBs Make

• Trusting the dashboard summary as the only data source. A summary number cannot be reconciled against anything; only a trade-level export can.
• Waiting until volume is large to start tracking. Reconciliation habits are far easier to build at 500 lots a month than to retrofit at 20,000.
• Escalating with emotion instead of numbers. "I think you're underpaying me" gets a defensive response. "Here are 90 trades, here's the contracted rate, here's the $1,650 gap" gets a data-driven one.
• Assuming shaving means fraud. Sometimes it is a genuine system bug, a stale rate card on the broker's side, or a policy change nobody communicated. Start every escalation as a question, not an accusation, and let the broker's response tell you which one it is.
• Ignoring sub-IB layers. If you manage sub-partners, reconcile their volume against the master feed too — leakage in a multi-tier structure is easy to hide inside an override that never quite reaches you. See our guide on Master IB networks for the added tracking discipline a tiered structure requires.
• Never comparing brokers. If every broker you have ever worked with shows the same small negative drift, the pattern may say more about your own tracking method than about any one partner — cross-check your methodology, not just the broker.

How This Fits Into Broader Due Diligence

Commission shaving detection is one check inside a much larger vetting process. Before you sign with any partner, work through the full IB due-diligence checklist, which covers regulatory status, payment history, and contract terms alongside commission tracking. If you are specifically worried about outright non-payment or a firm approaching insolvency rather than incremental shaving, read Broker Rebrands and Exit Scams for the warning signs that a firm is about to vanish. And before committing serious volume to a new broker, spend the 30 minutes described in How to Research a Broker's Reputation — public complaint patterns often surface commission disputes long before you would find them yourself.

If your commission structure runs through multiple tiers or a rebate-sharing system with sub-IBs beneath you, also confirm you are not accidentally running a self-rebate structure that some brokers explicitly prohibit — being flagged for a rule violation you did not know existed produces exactly the same missing-commission symptom as deliberate shaving, with a very different fix.

Finding Partners Worth This Level of Trust

Reconciliation only protects you after you have already chosen a partner. The earlier lever is choosing brokers with transparent, well-documented commission structures in the first place — clear rate cards, granular reporting, and a track record other IBs can verify. Revenika's Partner Glossary is a good place to build the vocabulary you need to read a deal sheet correctly and ask the right questions before you sign, whatever market you operate in.

Frequently Asked Questions

How much of a commission gap is normal rounding versus a real problem?

A gap under roughly 1-2% of contracted commission, that varies in direction month to month, is usually ordinary rounding and timing noise. A gap that is consistently in the broker's favor and grows in absolute terms as your volume grows is a pattern, not noise, and is worth a formal reconciliation request.

Can I detect commission shaving without asking the broker for anything?

No. You need at least your own tracked client volume to compare against a payout. Detecting shaving from the payout number alone, with no independent baseline, is not possible — you would have nothing to hold it against.

What should I do first if I find a consistent shortfall?

Document it with specific trades, dates, and the contracted rate, then raise it with your account manager as a question about methodology, not an accusation. Most legitimate brokers will either correct it or explain a policy you were not aware of. A broker that stonewalls a specific, numbered request is the actual red flag, more than the initial discrepancy itself.

Does commission shaving happen more in certain markets?

It can appear anywhere commissions are volume-based and calculated by a party other than the IB — forex, crypto exchange affiliate programs, and prop-firm affiliate payouts all use lot- or volume-based structures that are vulnerable to the same classification and rounding issues. The mechanics differ slightly by market but the detection method (independent tracking plus regular reconciliation) is the same.

Is commission shaving illegal?

Whether it is illegal depends on jurisdiction, the specific contract terms, and whether the underlying broker is regulated. It is not for this article to make a legal determination on any specific case. If your written deal terms are clear and a broker is consistently paying below them without disclosure, that is a contract dispute at minimum — consider your regulator's complaint process and, for material amounts, independent legal advice alongside the reconciliation work described here.

Conclusion

Commission shaving survives on scale and on IBs who trust the dashboard total without a way to check it. The fix is not complicated: track your own volume independently, request trade-level exports monthly, apply your contracted rate to a sample by hand, and treat a consistent, direction-biased gap as a data-driven conversation rather than a suspicion. Build the habit before your volume grows, because the dollar amounts involved only get larger, and a reconciliation process retrofitted at scale is far harder than one built from month one.

For further reading on how commission structures are supposed to work before you evaluate whether one is being executed correctly, see the FCA's guidance on financial promotions and inducements and ASIC's guidance on conflicted remuneration, both of which cover the regulatory backdrop for how commission-based referral arrangements are expected to be disclosed.